Function hipGraphExecDestroy 

pub unsafe extern "C" fn hipGraphExecDestroy(
    graphExec: hipGraphExec_t,
) -> hipError_t

@brief Destroys an executable graph

@param [in] graphExec - Instance of executable graph to destroy.

@returns #hipSuccess.

@warning This API is marked as Beta. While this feature is complete, it can change and might have outstanding issues.